Make OffscreenCanvas Transferable

third_party/WebKit/Source/bindings/modules/v8/TransferableOffscreenCanvas.h

Index: third_party/WebKit/Source/bindings/modules/v8/TransferableOffscreenCanvas.h
diff --git a/third_party/WebKit/Source/bindings/modules/v8/TransferableOffscreenCanvas.h b/third_party/WebKit/Source/bindings/modules/v8/TransferableOffscreenCanvas.h
new file mode 100644
index 0000000000000000000000000000000000000000..74b2050e2d3771f0a664944b8b94bab20e183429
--- /dev/null
+++ b/third_party/WebKit/Source/bindings/modules/v8/TransferableOffscreenCanvas.h
@@ -0,0 +1,27 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef TransferableOffscreenCanvas_h
+#define TransferableOffscreenCanvas_h
+
+#include "bindings/core/v8/Transferables.h"
+#include "modules/ModulesExport.h"
+#include "modules/offscreencanvas/OffscreenCanvas.h"
+
+namespace blink {
+
+class OffscreenCanvas;
+
+using OffscreenCanvasArray = HeapVector<Member<OffscreenCanvas>>;
+
+class MODULES_EXPORT TransferableOffscreenCanvas : public Transferables {
+public:
+    TransferableOffscreenCanvas() { }
+
+    OffscreenCanvasArray offscreenCanvases;
+};
+
+} // namespace blink
+
+#endif // TransferableOffscreenCanvas_h